// are provided, we will not return bucket metrics.
			if bmg, ok := h.metricsData.bucketMGMap[collectorPath]; ok {
				if len(buckets) == 0 {
					continue
				}
				unLocker := bmg.LockAndSetBuckets(buckets)
				defer unLocker()
			}
			gatherers = append(gatherers, gatherer)
		}
	}

	if len(gatherers) == 0 {
		return notFoundHandler
	}

	return promhttp.HandlerFor(prometheus.Gatherers(gatherers), h.opts)

func (m metacache) keepAlive(ctx context.Context, rpc *peerRESTClient) {
	// we intentionally operate on a copy of m, so we can update without locks.
	t := time.NewTicker(metacacheMaxClientWait / 10)
	defer t.Stop()
	for {
		select {
		case <-ctx.Done():
			// Request is done, stop updating.
			return
		case <-t.C:
			m.lastHandout = time.Now()

		}},
	}}

	for _, v := range vectors {
		t.Run(path.Base(v.file), func(t *testing.T) {
			f, err := os.Open(v.file)
			if err != nil {
				t.Fatalf("unexpected error: %v", err)
			}
			defer f.Close()

			var fr io.Reader = f
			if strings.HasSuffix(v.file, ".bz2") {
				fr = bzip2.NewReader(fr)
			}

			// Capture all headers and checksums.
			var (
				tr      = NewReader(fr)

	lock := api.NewNSLock(r.Bucket, objInfo.Name)
	lkctx, err := lock.GetLock(ctx, globalOperationTimeout)
	if err != nil {
		return err
	}
	ctx = lkctx.Context()
	defer lock.Unlock(lkctx)

	opts := ObjectOptions{
		VersionID:        objInfo.VersionID,
		Versioned:        versioned,
		VersionSuspended: versionSuspended,
		NoLock:           true,
	}

		}
		return
	}
}

// DetectTestLeak -  snapshots the currently running goroutines and returns a
// function to be run at the end of tests to see whether any
// goroutines leaked.
// Usage: `defer DetectTestLeak(t)()` in beginning line of benchmarks or unit tests.
func DetectTestLeak(t TestErrHandler) func() {
	initialStackSnapShot := NewLeakDetect()
	return func() {
		initialStackSnapShot.DetectLeak(t)
	}
}

	// Confirm that when Reader panics, the empty buffer remains empty
	var buf2 Buffer
	defer func() {
		recover()
		check(t, "TestReadFromPanicReader (2)", &buf2, "")
	}()
	buf2.ReadFrom(panicReader{panic: true})
}

func TestReadFromNegativeReader(t *testing.T) {
	var b Buffer
	defer func() {
		switch err := recover().(type) {
		case nil:
			t.Fatal("bytes.Buffer.ReadFrom didn't panic")

             * return which would render the timeout effectively useless.
             */
            doConnect();
        } catch (final Exception ex) {
            ex0 = ex; // Defer to below where we're locked
            return;
        } finally {
            synchronized (run_thread) {
                if (run_thread != thread) {

	if err != nil {
		return d, err
	}
	clnt := http.Client{
		Transport: http.DefaultTransport,
	}
	resp, err := clnt.Do(req)
	if err != nil {
		return d, err
	}
	defer resp.Body.Close()
	if resp.StatusCode != http.StatusOK {
		return d, fmt.Errorf("unexpected error returned by %s : status(%s)", ustr, resp.Status)
	}
	dec := json.NewDecoder(resp.Body)
	if err = dec.Decode(&d); err != nil {

	{URL: &url.URL{}, Header: http.Header{xhttp.AmzServerSideEncryptionCopyCustomerAlgorithm: []string{""}}, IsTLS: false, ShouldFail: true},   // 4
}

func TestSSETLSHandler(t *testing.T) {
	defer func(isSSL bool) { globalIsTLS = isSSL }(globalIsTLS) // reset globalIsTLS after test

	var okHandler http.HandlerFunc = func(w http.ResponseWriter, r *http.Request) {
		w.WriteHeader(http.StatusOK)
	}

	XL xl     `json:"xl"`
}

func getMountMap() (map[string]string, error) {
	result := make(map[string]string)

	mountInfo, err := os.Open("/proc/self/mountinfo")
	if err != nil {
		return nil, err
	}
	defer mountInfo.Close()

	scanner := bufio.NewScanner(mountInfo)
	for scanner.Scan() {
		s := strings.Split(scanner.Text(), " ")
		if len(s) != 11 {
			return nil, errors.New("unsupported /proc/self/mountinfo format")
		}